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Welcome to the authors’ companion website

Thanks for reading Zero Trust Security: An Enterprise Guide. In the time since we published this book, we’ve been thrilled by the positive feedback from readers, peers, and practitioners.

We’ve learned a ton from the numerous conversations and advisories with enterprise information security teams, and realized that we still have a lot to say and do in this space. In fact, we’re so passionate about this, we launched a business focused on helping enterprises create and execute effective Zero Trust strategies.

Visit us at Numberline Security to learn more about our Zero Trust blueprint, our enhanced and extended version of the CISA Zero Trust maturity model, and the advisory and education services we offfer.

On our website, you’ll find our active and ongoing blog series, and links to our latest videos.

Note that we’re retaining the videos below for historical purposes. See you over at Numberline Security soon.


Welcome and Introduction

Jason and Jerry welcome you to this video series, and set the stage for our discussions about the book.
(duration: 1 minute)

Session 1:
Our Zero Trust Origin Story

While neither of us are superheroes, we do have a Zero Trust origin story. In this video, we talk about how and when we each learned about these concepts, and what we hope our readers and viewers will take away from the book and the video series. (duration: 13 minutes)

Session 2:
Zero Trust Principles

In this session, we introduce the six Zero Trust principles, and talk about why they’re important.
(duration: 18 minutes)

Session 3:
What is Zero Trust?

In this session, we’re joined by a special guest — the book’s technical reviewer, Chris Steffen — and the three of us discuss our definition of Zero Trust.
(duration: 29 minutes)

Session 4: Zero Trust Architectures (part 1)

Zero Trust architectures matter a lot — their elements, capabilities, and deployment models have a big impact on enterprises’ journeys. In part 1, we talk about architectural principles and elements (duration: 23 minutes)

Session 5: Zero Trust Architectures (part 2)

In part 2 of this discussion, we talk through each of the four Zero Trust deployment models, and about why they’re good, but are (by necessity) incomplete representations of real-world deployments (duration: 20 minutes)

Session 6:
Cloud Migration

Cloud migration can take many different forms, and we discuss different considerations and impacts for Zero Trust depending on how the cloud is approached.
(duration: 24 minutes)

Session 7:
Triggers and Actions (part 1)

Enterprise IT systems are dynamic, with different types of triggers that a Zero Trust system must respond to. In part 1 of this topic, we discuss how these events impact Identities and Endpoints.
(duration: 27 minutes)

AWS Verified Access: Analysis and Commentary

An analysis of and commentary on AWS Verified Access, their Zero Trust remote access solution, announced at AWS re:invent in December 2022.
(duration: 25 minutes)

The State of Zero Trust 2023: Survey Review

Jason discusses the highlights from three recent surveys on “The State of Zero Trust”

(duration: 29 minutes)

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About Us

Jason Garbis and Jerry Chapman are the authors of Zero Trust Security: An Enterprise Guide, published March 2021

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